E1M3 (Tree3)

E1M3 is the third and final map of Tree3. It was designed by Greg Lewis (Tree) and uses the MIDI rendition of "" by as its music track.

Secrets

 * 1) At the start, turn left and run across the bridge. There is a door open in the north-east leading to 12 shotgun shells, two rockets, and a soul sphere. Note that the door to this secret closes permanently after 30 seconds. (sector 67)
 * 2) In the north of the level is a descending corridor that loops around on itself. There is a secret door on the eastern wall (inside the loop) leading to a partial invisibility. (sector 44)
 * 3) In the central room with the walkways over the water, there is a panel with two switches, both of which raise bridges. There is also a switch behind a secret door (which is slightly lighter than the rest of the wall) in the north-east of this room (at the end of the walkway) leading to a switch. Pressing these switches allows access to a secret door in the south-west of this area, leading to two rockets, a stimpack, a radiation shielding suit, four energy cells, two armor bonuses, and an armor. (sector 97)
 * 4) The rectangular room in the south-west (after the passageway with the light and dark triangles) has a secret door to the east (marked with a misaligned texture) leading to a box of bullets and a box of shotgun shells. (sector 175)
 * 5) After going through the teleporter past the red door, you will see a switch panel. The switch on the south side lowers a wall to the east, revealing some ammo, seven armor bonuses, and a soul sphere in the pool (which can be raised by a switch on its north-west side). (sector 256)
 * 6) Just before the teleporter to the blue key room is a switch which raises a switch panel in front of #5. After raising this (although it is not necessary to do so), enter secret #5 (the panel lowers on pressing the switch), wait for the panel and wall to raise, then lower the wall again, press the switch on this side of the panel, then jump over the panel as the wall rises. Run to the western area - a teleporter to the north has briefly lowered (it can be lowered repeatedly) leading to a room with a cacodemon and some imps, as well as a lift leading to the secret exit. (sector 333)

Current records
The records for the map at the Doom Speed Demo Archive are:

The data was last verified in its entirety on December 12, 2021.

Player spawns
This level contains four spawn points:
 * 1) facing east. (thing 19)
 * 2) facing east. (thing 29)
 * 3) facing west. (thing 346)
 * 4) facing south. (thing 348)

Things
This level contains the following numbers of things per skill level: